Tunnel vault vertical displacement monitoring device

Abstract

The utility model belongs to the technical field of tunnel structure monitoring, and provides a tunnel vault vertical displacement monitoring device, a plurality of monitoring devices are arranged along the extension direction of a tunnel vault, the adjacent monitoring devices are opposite front and back, and each monitoring device consists of a hanging frame, a laser sensor and a reflective panel; a main body of the hanging frame is a C-shaped plate body, a mounting plate extending upwards is welded to the rear end of the top of the hanging frame, and bolts are mounted on the mounting plate and used for fixing the mounting plate to a tunnel vault. According to the scheme, all-weather and unmanned monitoring of the tunnel vault can be achieved through flexible and reasonable arrangement of the monitoring devices, the multiple monitoring devices are sequentially arranged in the extending direction of the tunnel vault, an effective measurement link can be formed among the multiple monitoring devices, and continuous monitoring is conducted on all the components according to the relative installation positions; the displacement condition of the vault can be found in the first time, convenience and rapidness are achieved, and early warning of the tunnel vault in the first time is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel structure monitoring technical field, concretely is a kind of tunnel vault vertical displacement monitoring device. BACKGROUND

[0002] If tunnel vault vertical displacement is too large, the pressure distribution borne by lining structure will change. For example, when vault sinks, the concrete at the top of lining will be subjected to additional tensile stress. The tensile strength of concrete is relatively low compared to compressive strength. Once the tensile stress exceeds the ultimate tensile strength, cracks will appear in the lining. These cracks will continue to expand as the displacement continues to develop, and in severe cases, may cause the lining to partially fall off, causing the supporting structure inside the tunnel to lose integrity; This will destroy the original balance between the tunnel and the surrounding rock and soil, causing the rock and soil around the tunnel to become loose, and thus triggering the overall instability of the tunnel. Just like building blocks, when the position of the top block (equivalent to the tunnel vault) changes significantly, the stability of the entire block structure (tunnel structure) will be threatened, so it is extremely important to detect the displacement of the tunnel vault in time. Therefore, we propose a tunnel vault vertical displacement monitoring device. SUMMARY

[0003] The utility model is aimed at providing a tunnel vault vertical displacement monitoring device to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a tunnel vault vertical displacement monitoring device, the monitoring device is provided with multiple, and is arranged along the extension direction of tunnel vault, and adjacent monitoring devices are opposite to each other, the monitoring device is composed of a hanging bracket, a laser sensor and a reflective panel;

[0005] The main body of the hanging bracket is a C-shaped plate body, an upwardly extending mounting plate is welded to the top rear end of the hanging bracket, and a bolt is installed on the mounting plate to fix the mounting plate on the tunnel vault; a laser sensor is installed in the middle of the hanging bracket, and adjusting feet are symmetrically installed on the left and right sides of the bottom of the laser sensor; and the top of the laser sensor is movably embedded in the inner wall of the hanging bracket.

[0006] Adjusting bolts are installed on the four corners of the bottom of the hanging bracket, nuts are symmetrically installed on the adjusting feet, the adjusting bolts are upwardly screwed into the nuts, the adjusting feet are placed in the hanging bracket, and the balance of the laser sensor is adjusted by the up-and-down screwing of the four adjusting bolts; a reflective panel is installed on the rear side of the hanging bracket, and when the monitoring devices are adjacent to each other, the light beam of the rear laser sensor is irradiated on the reflective panel of the front side.

[0007] Preferably, a bubble level is embedded in the middle of the top of the hanging bracket.

[0008] Preferably, the adjusting bolt is sleeved with a spring, and the other end of the spring abuts against the bottom of the hanging frame, so that the adjusting bolt is provided with pre-tightening force and compensation for slackness by the spring.

[0009] Preferably, the light-reflecting panel comprises a panel, a reflector, a damping rotating shaft and a light-reflecting panel mounting foot, the middle part of the panel is provided with the reflector, the bottom of the panel is provided with the damping rotating shaft, the bottom of the damping rotating shaft is provided with the light-reflecting panel mounting foot, and the light-reflecting panel mounting foot is screwed with a screw, so that the light-reflecting panel is fixed on the hanging frame by the screw; and the orientation angle of the light-reflecting panel is adjusted by rotating the damping rotating shaft.

[0010] Preferably, the panel is a transparent acrylic plate, and a scale is longitudinally arranged on the back side of the panel, so that the relative position between the light beam of the laser sensor and the scale can be visually judged to determine the vertical displacement condition.

[0011] Preferably, the laser sensor further comprises a control box, and the laser sensor provides electric energy and transmits data through a data optical cable.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The flexible and reasonable arrangement of the monitoring device can realize all-weather and unmanned monitoring of the tunnel vault, multiple monitoring devices are arranged in sequence along the extension direction of the tunnel vault, effective measurement links can be formed between the monitoring devices, and each component is continuously monitored according to the relative position of installation; the displacement condition of the vault can be found at the first time, which is convenient and fast, and realizes the first-time early warning of the tunnel vault; the monitoring device is provided with multiple monitoring devices, and is arranged along the extension direction of the tunnel vault, and adjacent monitoring devices are opposite to each other, so that the continuous monitoring of a longer range of the tunnel vault can be realized, the key parts of the tunnel are comprehensively covered, and more complete displacement information can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the monitoring device of the utility model;

[0015] Figure 2 It is a rear view of the monitoring device of the utility model;

[0016] Figure 3 It is a schematic view of the adjusting bolt and the adjusting foot of the utility model;

[0017] Figure 4 It is a front view of the monitoring device assembly of the utility model;

[0018] Figure 5 It is a rear view of the monitoring device assembly of the utility model.

[0019] In the figure: 1 hanging frame, 1-1 mounting plate, 1-2 bolt, 1-3 bubble level, 1-4 adjusting foot, 1-5 adjusting bolt, 1-6 spring;

[0020] 2 laser sensor;

[0021] 3 reflective panel, 3-1 panel, 3-2 reflector, 3-3 scale, 3-4 damping pivot, 3-5 reflective panel mounting foot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] Embodiment:

[0025] Please refer to Figures 1-5 The present application provides the following technical scheme: a tunnel vault vertical displacement monitoring device, the monitoring device is provided with a plurality of monitoring devices, and the monitoring devices are arranged along the extension direction of the tunnel vault, and adjacent monitoring devices are opposite to each other, the monitoring device is composed of a hanging frame 1, a laser sensor 2 and a reflective panel 3.

[0026] The main body of the hanging frame 1 is a C-shaped plate body, an upwardly extending mounting plate 1-1 is welded at the top rear end of the hanging frame 1, and a bolt 1-2 is installed on the mounting plate 1-1 to fix the mounting plate 1-1 on the tunnel vault; a bubble level 1-3 is embedded in the middle of the top of the hanging frame 1.

[0027] The laser sensor 2 is installed in the middle of the hanging frame 1, adjusting feet 1-4 are symmetrically installed on the left and right sides of the bottom of the laser sensor 2, and the top of the laser sensor 2 is movably embedded in the inner wall of the hanging frame 1; when the adjusting feet 1-4 at the bottom are adjusted under the driving of the adjusting bolt 1-5, the gap between the top of the laser sensor 2 and the inner cavity of the hanging frame 1 is the adjustment space (the gap in the inner cavity of the hanging frame 1 is not shown in the figure);

[0028] The bottom of the hanging frame 1 is provided with four adjusting bolts 1-5, and the adjusting feet 1-4 are symmetrically provided with nuts, the adjusting bolts 1-5 are screwed into the nuts, and the adjusting feet 1-4 are placed in the hanging frame 1, and the balance of the laser sensor 2 is adjusted by the up-and-down screwing of the four adjusting bolts 1-5;

[0029] The adjusting bolt 1-5 is sleeved with a spring 1-6, and the other end of the spring 1-6 abuts against the bottom of the hanging frame 1, the spring 1-6 provides a pre-tightening force for the adjusting bolt 1-5 and compensates for slack, and the rear side of the hanging frame 1 is provided with a reflective panel 3, when the monitoring device is adjacent to the front and rear sides, the light beam of the laser sensor 2 on the rear side is irradiated on the reflective panel 3 on the front side;

[0030] The reflective panel 3 comprises a panel 3-1, a reflector 3-2, a damping pivot 3-4 and a reflective panel mounting foot 3-5, the middle part of the panel 3-1 is provided with the reflector 3-2, the bottom of the panel 3-1 is provided with the damping pivot 3-4, the bottom of the damping pivot 3-4 is provided with the reflective panel mounting foot 3-5, and the reflective panel mounting foot 3-5 is screwed with a screw, and the reflective panel 3 is fixed on the hanging frame 1 through the screw; the orientation angle of the reflective panel 3 is adjusted by the rotation of the damping pivot 3-4;

[0031] The panel 3-1 is a transparent acrylic plate, and a scale 3-3 is longitudinally arranged on the rear side of the panel 3-1, and the relative position between the light beam of the laser sensor 2 and the scale 3-3 can be used to judge the vertical displacement by naked eyes; the laser sensor 2 further comprises a control box, and the laser sensor 2 provides electric energy and transmits data through a data cable, so that the scheme can be flexibly arranged in the reverse direction along the extension of the tunnel vault, which is very convenient;

[0032] The laser sensor 2 is a high-precision laser proximity sensor, and the measurement accuracy can reach ±0.1mm, which can accurately capture the small vertical displacement change of the tunnel vault, and the range of the sensor is reasonably designed according to the actual deformation expectation of the tunnel, for example, set to ±50mm, which can meet the displacement monitoring requirements of most tunnel vaults, and can timely send an alarm signal when the range is exceeded;

[0033] A temperature sensor and a barometric pressure sensor are arranged outside the control box to monitor the real-time changes of the tunnel environment temperature and barometric pressure, a processor is arranged in the control box to collect the collected data of the laser sensor 2, the temperature sensor and the barometric pressure sensor, and then the data is transmitted to the control background through the data cable, the data processing program is built in the control box to arrange the data, the laser alignment result is automatically calibrated and compensated according to the temperature and barometric pressure data, the influence of environmental factors on the alignment accuracy is eliminated, and the accuracy and reliability of the data are ensured;

[0034] The control background is a tunnel monitoring data processing center equipped with high-performance servers and professional data processing software, has functions of real-time data receiving, storage, processing and analysis, can perform real-time processing on the data transmitted by the laser sensor 2, calculate the vertical displacement of each monitoring point, and generate visual results such as displacement curves and reports; through the abnormal detection algorithm preset by the software, the abnormal displacement data can be quickly identified, and warning information can be automatically sent to inform the relevant management personnel to take timely measures;

[0035] The scheme provides a tunnel vertical displacement monitoring device which can be flexibly arranged, realizes all-weather and unmanned monitoring of the tunnel, and fixes the whole monitoring device on the tunnel vault through the mounting plate 1-1 welded at the top rear end of the hanging bracket 1 and the bolt 1-2 mounted thereon; a plurality of monitoring devices are arranged in sequence along the extension direction of the tunnel vault and placed opposite to each other, thereby forming a monitoring line; the bubble level 1-3 embedded in the middle of the top of the hanging bracket 1 is used to check whether the device is in a horizontal state, so as to adjust the posture of the whole device and ensure that the measurement direction of the subsequent laser sensor 2 meets the requirements, thereby improving the measurement accuracy;

[0036] The height of the four corners of the laser sensor 2 can be adjusted through the adjusting bolts 1-5 at the four corners, so that the balance of the laser sensor 2 is achieved; the spring 1-6 sleeved on the adjusting bolt 1-5 provides pre-tightening force for the adjusting bolt 1-5 and compensates for relaxation, so that the laser sensor 2 can stably be in a balanced state; the spring 1-6 can provide a continuous vertical force, so that the friction between the nut and the adjusting bolt 1-5 is maintained at a certain level, thereby ensuring the stability and accuracy of the measurement;

[0037] The laser sensor 2 is a high-precision laser proximity sensor, which emits a laser beam to the light-reflecting panel 3 of the front adjacent monitoring device; the laser beam is reflected back after being irradiated to the reflector 3-2, and the laser sensor 3-2 determines the relative position of the front and rear adjacent monitoring devices according to the emitted and received laser, so as to judge whether the tunnel vault has vertical displacement;

[0038] The diameter of the reflector 3-2 is the safety range of the vertical displacement of the tunnel vault; when the laser beam passes the reflector 3-2, it directly passes through the transparent panel 3-1 and cannot be reflected, at this time, the laser sensor 2 cannot receive the reflected laser beam, so the parameters of the laser sensor 2 also change accordingly; the vertical displacement condition is inferred through analysis of these changes;

[0039] Meanwhile, the scale 3-3 on one side of the reflector 3-2 can assist in debugging the laser sensor 2, and the relative position of the scale 3-3 and the laser beam is accurately adjusted.

[0040] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be considered as limiting the claims involved.

[0041] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tunnel vault vertical displacement monitoring device, the monitoring device is provided with a plurality of monitoring devices, and the monitoring devices are arranged along the extension direction of the tunnel vault, and adjacent monitoring devices are opposite to each other, the monitoring device is composed of a hanging frame (1), a laser sensor (2) and a reflective panel (3), and the monitoring device is characterized in that: the main body of the hanging frame (1) is a C-shaped plate body, an upward extending mounting plate (1-1) is welded at the top rear end of the hanging frame (1), a bolt (1-2) is installed on the mounting plate (1-1) to fix the mounting plate (1-1) on the tunnel vault; the laser sensor (2) is installed in the middle of the hanging frame (1), and adjusting feet (1-4) are symmetrically installed on the left and right sides of the bottom of the laser sensor (2), and the top of the laser sensor (2) is movably embedded in the inner wall of the hanging frame (1); adjusting bolts (1-5) are installed on the four corners of the bottom of the hanging frame (1), screw nuts are symmetrically installed on the adjusting feet (1-4), the adjusting bolts (1-5) are screwed into the screw nuts, the adjusting feet (1-4) are placed in the hanging frame (1), and the balance of the laser sensor (2) is adjusted by the up and down screwing of the four adjusting bolts (1-5); the reflective panel (3) is installed on the rear side of the hanging frame (1), and when the monitoring devices are adjacent to each other, the light beam of the laser sensor (2) on the rear side is irradiated on the reflective panel (3) on the front side. A bubble level (1-3) is embedded in the middle of the top of the hanging frame (1).

2. The device for monitoring vertical displacement of a tunnel vault according to claim 1, characterized in that: A spring (1-6) is sleeved on the adjusting bolt (1-5), and the other end of the spring (1-6) abuts against the bottom of the hanging frame (1), the spring (1-6) provides pre-tightening force for the adjusting bolt (1-5) and compensates for relaxation.

3. The device for monitoring vertical displacement of a tunnel vault according to claim 1, characterized in that: The reflective panel (3) comprises a panel (3-1), a reflector (3-2), a damping shaft (3-4) and a reflective panel mounting foot (3-5), the middle of the panel (3-1) is provided with the reflector (3-2), the bottom of the panel (3-1) is provided with the damping shaft (3-4), the bottom of the damping shaft (3-4) is provided with the reflective panel mounting foot (3-5), and a screw is screwed on the reflective panel mounting foot (3-5), the reflective panel (3) is fixed on the hanging frame (1) through the screw; the orientation angle of the reflective panel (3) is adjusted through the rotation of the damping shaft (3-4).

4. The device for monitoring vertical displacement of a tunnel vault according to claim 1, characterized in that: The panel (3-1) is a transparent acrylic plate, and a scale (3-3) is longitudinally arranged on the rear side of the panel (3-1), and the relative position of the light beam of the laser sensor (2) and the scale (3-3) can be used to judge the vertical displacement by naked eyes.

5. The device for monitoring vertical displacement of a tunnel vault according to claim 4, characterized in that: The laser sensor (2) further comprises a control box, and the laser sensor (2) provides power and transmits data through a data cable.

6. The device for monitoring vertical displacement of a tunnel vault according to claim 1, characterized in that: ​

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